
Difference Engine No. 1
circa 1832
circa 1832
1835
1838
1830
1775-1799 (original); 1900-1907 (model)
1839 (original); circa 1988 (replica)
1837
1837
1934
1830
1837
1834
1834
1834
1832
1893-4
1863-7
2000-100 BCE
1835
1837
1831
1838
1837
1833
1831
1836
1837
1839
1838
1837
1955; 1830
1839
1838
1839
1990-96
1830
1839
1831
1833
1832
1839
1772 (original); 1919 (model)
1839
1830-1835
1705-1737
1835
1835
1838
4000-2001 BCE
1930 (replica); 1834 (original)